We will find that the discharge amount is not related to the voltage at this time, and the voltage drop down is still directed motion, which is influenced by the power supply cut off, short circuit and superposition load, and has strict time correspondence, but it is irregular. Of course, it may be possible to test other prototypes without such interference, but the interference is random. When the power is added to the filter, the intrusion is unlikely to exist.
If the window is unable to open a fixed phase to avoid this interference, it is possible to check whether there is an electric crane, welding, saw and so on at the same time in the surrounding environment. Because all kinds of channels and various ways will produce a variety of interference signals, if a short time is still the case, it is suggested to be placed in the afternoon or evening test, may be less interference. It is very necessary to recommend repeated inspection and take various effective measures to restrain and verify.
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